748217493872639 has 12 divisors (see below), whose sum is σ = 878993030794968. Its totient is φ = 634979485602000.

The previous prime is 748217493872633. The next prime is 748217493872657. The reversal of 748217493872639 is 936278394712847.

It is not a de Polignac number, because 748217493872639 - 2²⁸ = 748217225437183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (748217493872633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75592790957 + ... + 75592800854.

It is an arithmetic number, because the mean of its divisors is an integer number (73249419232914).

Almost surely, 2^{748217493872639} is an apocalyptic number.

748217493872639 is a deficient number, since it is larger than the sum of its proper divisors (130775536922329).

748217493872639 is a wasteful number, since it uses less digits than its factorization.

748217493872639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151185591926 (or 151185591919 counting only the distinct ones).

The product of its digits is 6145155072, while the sum is 80.

The spelling of 748217493872639 in words is "seven hundred forty-eight trillion, two hundred seventeen billion, four hundred ninety-three million, eight hundred seventy-two thousand, six hundred thirty-nine".